What to watch when there's a lack of live sports

While most people are focused on the team sports that have been put on hold, Friday’s TV listings are a good reminder that tennis is another big thing we’re all missing. Fortunately, ESPN2 is stepping up with a pretty nice marathon of sorts: some of the best all-time matches between sisters Serena and Venus Williams, starting at 5 p.m. with the Australian Open finals and continuing through the evening.